IP ADDRESSING AND SUBNETTING

Question 1

An IP address has ____ bits?
And is divided by ____ octets?

Answer 1

32
and
4

Question 2

When binary IP addresses are written in decimal format.

Answer 2

Dotted Decimal Notation

Question 3

Devised for use on large networks.

Answer 3

IP addressing

Question 4

have a hierarchical structure and do provide logical groupings.

Answer 4

IP Addresses

Question 5

IANA stands for…?

Answer 5

Internet Assigned Numbers Authority
Devised the hierarchical IP addressing structure

Question 6

ARIN stands for…?

Answer 6

American Registry of Internet Numbers
Manages IP addresses in the United States

Question 7

ICANN stands for…?

Answer 7

Internet Corporation for Assigned Names and Numbers

Question 8

Kinds of IP Classes

Answer 8

• Class A
• Class B
• Class C
• Class D
• Class E

Question 9

Reserved for governments and large corporations throughout the world.

Answer 9

Class A
supports 16,777,214 hosts

Question 10

Addresses are assigned to large- and medium-sized companies

Answer 10

Class B
supports 65,534 hosts

Question 11

Addresses are assigned to groups that do not meet the qualifications to obtain Class A or B addresses.

Answer 11

Class C
supports 254 hosts

Question 12

Addresses (also known as multicast addresses) are reserved for multicasting

Answer 12

Class D

Question 13

is the sending of a stream of data (usually audio and video) to multiple computers simultaneously.

Answer 13

Multicasting

Question 14

Addresses are reserved for research, testing, and experimentation.
Starts where Class D leaves off.

Answer 14

Class E

Question 15

Gateway devices have network interface connections to the internal network and the Internet.

Answer 15

Private IP ranges

Question 16

Ranges of each IP Classes…?
(example: number between 1 and 126)

Answer 16

1. Class A= 1 and 126
2. Class B= 128 and 191
3. Class C= 192 and 223
4. Class D= 224 and 239
5. Class E= 240 and 255

Question 17

Indicates how much of the IP address represents the network or subnet

Answer 17

Subnet Mask

Question 18

Manipulation of the subnet mask to get more network numbers.

Answer 18

Subnetting

Question 19

Network is identified by the first, or first few, octets.

Answer 19

Subnet Address

Question 20

When the entire host portion of an IP address is all binary ones

Answer 20

Broadcast Address

Question 21

Broadcast Types(2):

Answer 21

• Flooded Broadcast
• Directed Broadcast

Question 22

Broadcasts for any subnet.
Uses the IP address 255.255.255.255.

Answer 22

Flooded Broadcasts

Question 23

Are for specific subnet. Routers can forward directed broadcasts

Answer 23

Directed Broadcasts

Question 24

Developed to slow the exhaustion of IP addresses.

Answer 24

Classless Inter-Domain Routing (CIDR)

Question 25

CIDR addressing method allows the use of a ____ to designate the number of network bits in the mask.

Answer 25

**Prefix**

Question 26

Also know as route aggregation or supernetting. Allows many IP subnets to be advertised as one

Answer 26

**Summarization**

Question 27

Allows different masks on the subnets. Essentially done by subnetting the subnets

Answer 27

**Variable length subnet masking** (VLSM)

Question 28

numbering system is base 16

Answer 28

**Hexadecimal** (well duh:D)

Question 29

The version of IP currently deployed on most systems today.

Answer 29

**IP version 4** (IPv4)

Question 30

Originally designed to address the eventual depletion of IPv4 addresses.

Answer 30

**IP version 6** (IPv6)

Question 31

Another technique developed in part to slow the depletion of IPv4 addresses. Allows a single IP address to provide connectivity for many hosts.

Answer 31

**Network address translation** (NAT)

Question 32

Some protocols do not work well with NAT, such as the ____ ?

Answer 32

**IP Security Protocol** (IPSec)

Question 33

how many bits is IPv4?

Answer 33

**32 bits**

Question 34

how many bits is IPv6?

Answer 34

**128 bits**

Question 35

Involves enabling IPv6 on all routers, switches, and end nodes but not disabling IPv4.

Answer 35

**Dual Stack**

Question 36

Encapsulates IPv6 traffic inside IPv4 packets. Done when portions of a network are running IPv6 and other network areas have not been upgraded yet.

Answer 36

**Tunneling**